Please don't remove Firefox! I use the free wifi at Whole Foods Market in Palm Beach Gardens, FL all the time and I can't get on with Chromium but I can get on with Firefox. (Don't know why Chromium doesn't work.)
Firefox's ADDONS is a must for me.
Google Chrome needs more work on this direction.
Chromium is getting better all the time. It is quick and there are an increasing number of extensions.
Midori is worth watching too. It s is pretty rough at the moment but is looking to have good potential.
The way Chromium displays very big bookmark folders is very inconvenient. This is a showstopper for me.